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    Description

    FOSSIL SEED FERN PLATE
    Various genera
    Late Carboniferous, Pennsylvanian subperiod
    Llewellyn Formation, St Claire, Schuylkill Co., Pennsylvania, USA
    The seed ferns of Pennsylvania were instrumental in establishing the Carboniferous timeline of North America, their local abundance suggesting the name of the Pennsylvanian subperiod. Preserved in incredibly fragile shale, they are a fossil hound's nightmare to remove, but their superb appearance makes the effort worthwhile. This is a particularly fine, thin plate, 9¼ x 6¼ inches, by up to ⅜ inch thick. The fossils are highlighted with the characterful coating of white Pyrophyllite (the phyllosillicate mineral used in tailor's chalk). The patterns of the various fern genera leap in dramatic contrast from the dark gray shale, making for a rare, highly aesthetic, and extremely old fossil.


    Condition Report*: Condition report available upon request.
    *Heritage Auctions strives to provide as much information as possible but encourages in-person inspection by bidders. Statements regarding the condition of objects are only for general guidance and should not be relied upon as complete statements of fact, and do not constitute a representation, warranty or assumption of liability by Heritage. Some condition issues may not be noted in the condition report but are apparent in the provided photos which are considered part of the condition report. Please note that we do not de-frame lots estimated at $1,000 or less and may not be able to provide additional details for lots valued under $500. Heritage does not guarantee the condition of frames and shall not be liable for any damage/scratches to frames, glass/acrylic coverings, original boxes, display accessories, or art that has slipped in frames. All lots are sold "AS IS" under the Terms & Conditions of Auction.

    Auction Info

    Auction Dates
    May, 2012
    20th Sunday
    Bids + Registered Phone Bidders: 12
    Lot Tracking Activity: N/A
    Page Views: 1,381

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